Periodic Table of Elements

The periodic table of the chemical elements displays the organizing principles of matter. The table is a tabular depiction of the chemical elements and their characteristics. Russian chemist Dmitri Mendeleev is generally credited with the invention of the periodic table.

The layout of the table has been refined and extended over time, as new elements have been discovered and new theoretical models have been developed to explain chemical behavior.

IUPAC released the most recent version of the periodic table on Nov. 28, 2016. It includes elements 113 (Nihonium – Nh), 115 (Moscovium – Mc), 117 (Tennessine – Ts), and 118 (Oganesson – Og).